How to Increase Testosterone Through Antioxidants

There's a lot going on in those testes of yours, including sperm and testosterone
production. Yeah, it's a big factory down there and researchers have found
increasing evidence that "oxidative stress", i.e. free radical damage, is one of the
leading causes of lowered testosterone. Damage to the mitochondria appears
to play a key role. [4] In an eye-opening study, researchers found that the
Vitamin E, a antioxidant that quenches several free radicals, actually slowed down the age-related decline in testosterone in lab
rats. [1] This may mean that one can significantly slow down andropause if one
starts at a young enough age. Life is full of regrets, eh?

Researchers have also discovered reduced levels of key antioxidants, such as the
heavy hitters SOD and
glutathione, in aging rat Leydig cells, thus adding weight to the above
oxidative stress theory and the need for adequate antioxidant dietary support.
[2] However, here is what should really catch your attention:

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Scientists discovered that, at least according to animal research,
you can likely boost your testosterone levels through increased consumption of certain powerful antioxidants. It's
analagous to adding lubrication to machinery in order to attain greater
output and efficiency. Now some antioxidants appear to be more powerful
androgen-stimulators than others and we outline some of those below.

Keep in mind that this is all relatively new and so studies on humans have not really occurred to
date. However, animal studies do look promising as I have summarized below:

2. Quercetin. Quercetin is the powerful antioxidant flavonoid in onions,
red grapes, tea and many other fruits and vegetables. It has powerful
anti-cancer properties and has been the subject of extensive research. One
of its lesser known superpowers (in rats at least) is increasing
testosterone. Scientists found, for example, that giving 50 mg per kg
of body weight gave an almost 80% in testosterone. [6]

Of course, the problem with this is that for the typical 160 pound male, you are
talking about a megadose of over 3 grams of quercetin in us humans. Nevertheless, it shows the power of some antioxidants to power up
testosterone production in the ol' Leydig cells. NOTE:
I do not know the human-to-equivalent ratio for the rats used in this study.

3. Onion Juice. Based on #2, it probably will be no surprise that
onions, if consumed in large enough quantities, can boost testosterone. Of
course, the question of the day becomes "how in the world do I eat an onion or
two and still live in polite society"? Researchers came up with a nice
solution: onion juice. They just blended one standard onion and - shazam! -
the juice boosted rat testosterone by 300+%. [5]

The only problem is that the amount of onion juice these rats consumed was 1 gram
per kilogram, which translates to about 73 grams of onion juice for the typical
72 kg guy.
However, it should be noted that even taking half that amount of onion juice
created a nice testosterone boost as well, so it is likely dose dependent, i.e.
even a smaller amount of onion juice may give you a little lift.
NOTE:
I do not know the human-to-equivalent ratio for the rats used in this study.

4. Melatonin. Data is very limited but the antioxidant and hormone
melatonin appears to protect testosterone in Leydig cells as well. [1]

So should you start gulping gallons of juice? Well, that's a little
premature for a variety of reasons. First of all, all of the above studies are
on animals and may not translate to humanoids such as ourselves. Furthermore, perhaps it's
possible to overdo antioxidant consumption. For example, some experts have
posited that if you overdo ingestion of antioxidants, it shuts down the body's own
natural antioxidant production. In fact, some studies have shown that
antioxidants in supplement form may actually be dangerous to your heart or
promote cancer as I document in my links Antioxidants and Your Heart
and The Dangers of Antioxidant Supplements.

However, a solid diet loaded loaded with ample antioxidants
will likely protect and possibly boost your testosterone and give you multiple
additional health benefits as well.